Overview
- The CDC issued new guidance to health departments warning that more measles cases are likely in the coming months as spring and summer travel increases.
- The agency urged 24-hour reporting of suspected cases, active contact tracing and surveillance, quick lab confirmation, clear hospital reporting procedures, and outreach to under-vaccinated groups.
- CDC data show 1,792 confirmed cases so far this year across 36 states, with about 92% in people who are unvaccinated or whose vaccination status is unknown.
- Officials have logged 22 outbreaks in 2026, with 93% of cases tied to outbreaks, and 10 additional cases reported in international visitors.
- Ongoing transmission could threaten the U.S. measles elimination status later this year, following 2,288 cases and three deaths in 2025 and continued declines in kindergarten vaccination coverage.